h4570
71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/*
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# ______ ____ ___
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# | \/ ____| |___|
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# | | | \ | |
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#-----------------------------------------------------------------------
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# Copyright 2020, tyra - https://github.com/h4570/tyra
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# Licenced under Apache License 2.0
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# Sandro Sobczyński <sandro.sobczynski@gmail.com>
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*/
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#include "./utils.hpp"
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#include <fastmath.h>
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/** Exponential ease-in-out animation
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* @param t Time
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* @param b Start value
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* @param c Change
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* @param d Duration
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* @returns Current animation position
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*/
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float Utils::expoEaseInOut(float t, float b, float c, float d)
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{
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if (t == 0)
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return b;
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if (t == d)
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return b + c;
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if ((t /= d / 2) < 1)
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return c / 2 * powf(2, 10 * (t - 1)) + b;
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return c / 2 * (-powf(2, -10 * --t) + 2) + b;
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}
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/** Calculates minimum and maximum X, Y, Z of mesh vertices + current position */
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void Utils::getMinMax(const Mesh &t_mesh, Vector3 &t_min, Vector3 &t_max)
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{
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Vector3 calc = Vector3();
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u8 isInitialized = 0;
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Vector3 *boundingBox = t_mesh.getCurrentBoundingBox();
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for (u32 i = 0; i < 8; i++)
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{
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calc.set(
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boundingBox[i].x + t_mesh.position.x,
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boundingBox[i].y + t_mesh.position.y,
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boundingBox[i].z + t_mesh.position.z);
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if (isInitialized == 0)
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{
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isInitialized = 1;
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t_min.set(calc);
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t_max.set(calc);
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}
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if (t_min.x > calc.x)
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t_min.x = calc.x;
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if (calc.x > t_max.x)
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t_max.x = calc.x;
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if (t_min.y > calc.y)
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t_min.y = calc.y;
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if (calc.y > t_max.y)
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t_max.y = calc.y;
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if (t_min.z > calc.z)
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t_min.z = calc.z;
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if (calc.z > t_max.z)
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t_max.z = calc.z;
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}
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}
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